Zeyno Baran talked about Secretary of State Clinton’s trip to Russia, and she responded to telephone calls and electronic mail. Topics included an update on efforts to renegotiate the 1991 Strategic Arms Reduction Treaty (START), which expires at the end of the year; the two countries' dispute over U.S. plans to build missile components sites in Poland and the Czech Republic, and U.S. efforts to engage Russia in deterring Iran’s nuclear ambitions.